Thornton Chase (1847 – 1912) is commonly recognized as the first convert to the Bahá'í Faith of Occidental background. During his life he organized many Bahá'í activities in Chicago and Los Angeles and was considered a prominent Bahá'í.

This volume is primarily intended to supply a working and practical knowledge of the Persian language, for the benefit of those who have not the time or the inclination to master the grammar, and yet require to use the spoken tongue for purposes of business or pleasure.

The international language Esperanto was first released to the world in 1887, when L. L. Zamenhof published his first book, "Dr. Esperanto's International Language". Since that time, many learning books have been developed to help the beginner attain a proficiency in the language.

In July 1887, Esperanto made its debut as a 40-page pamphlet from Warsaw, published in Russian, Polish, French and German: all written by a Polish eye-doctor under the pen-name of Dr. Esperanto ("one who hopes").